U.S. flag

An official website of the United States government

PubAg

Main content area

You searched for: Journal FEMS microbiology letters Remove constraint Journal: FEMS microbiology letters Publication Year 2007 Remove constraint Publication Year: 2007 Subject Escherichia coli Remove constraint Subject: Escherichia coli Subject gene expression Remove constraint Subject: gene expression
Start Over

Search

9  Search Results

1 - 9 of 9
Number of results to display per page

Search Results

1. Effects of DNA supercoiling and topoisomerases on the expression of genes coding for F165₁, a P-like fimbriae

Author:
Tessier, Marie-Catherine; Graveline, Richard; Crost, Cécile; Desabrais, Julie Annick; Martin, Christine; Drolet, Marc; Harel, Josée
Source:
FEMS microbiology letters 2007 v.277 no.1 pp. 28-36
ISSN:
0378-1097
Subject:
DNA topoisomerase; DNA topoisomerase (ATP-hydrolysing); Escherichia coli; fimbriae; gene expression; intergenic DNA; mutants; mutation; operon; septicemia; swine; transcription (genetics)
Abstract:
... Pathogenic Escherichia coli 4787 (O115:KV165) causes septicemia in pigs and expresses the fimbriae F165₁ encoded by the foo operon that belongs to the P fimbrial family. fooI and fooB, encoding specific foo regulators, are divergently transcribed; their intergenic region is responsible for the regulation of foo expression. The role of global and local supercoiling (transcription-induced supercoili ...
DOI:
10.1111/j.1574-6968.2007.00919.x

2. Fate of the sblA transcript in Streptomyces lividans and Escherichia coli

Author:
Chouayekh, Hichem; Virolle, Marie-Joëlle
Source:
FEMS microbiology letters 2007 v.276 no.1 pp. 42-47
ISSN:
0378-1097
Subject:
Escherichia coli; Streptomyces lividans; gene expression; genes; messenger RNA; nucleotides; ribonucleases; site-directed mutagenesis
Abstract:
... In Streptomyces lividans, the tight temporal regulation of the transient expression of the sblA gene was shown to involve an operator-like sequence located on the sblA transcript. This operator-like structure constitutes a stem-loop structure containing a Shine/Dalgarno-like sequence. Its destruction, by site directed mutagenesis, led to an enhancement of sblA expression. This structure thus plays ...
DOI:
10.1111/j.1574-6968.2007.00912.x
PubMed:
17877728

3. Global gene expression profiling of wild type and lysC knockout Escherichia coli W3110

Author:
Liu, Daniel Yuen-Teh; Liu, Chia-Hsin; Lai, Ming-Tsong; Lin, Hua-Kuo; Hseu, Tzong-Hsiung
Source:
FEMS microbiology letters 2007 v.276 no.2 pp. 202-206
ISSN:
0378-1097
Subject:
Escherichia coli; alpha-ketoglutaric acid; aspartate kinase; biosynthesis; gene expression; gene expression regulation; genes; glutamic acid; heat shock proteins; lysine; starvation; transporters
Abstract:
... Aspartokinase III, encoded by lysC, is responsible for the first step of lysine biosynthesis in Escherichia coli. In this study, a lysC knockout E. coli W3110 strain was generated to study the differential gene expression profiles of wild type and lysC knockout strains. Several significant changes were observed, including biosynthesis of lysine, oxaloacetate, α-ketoglutarate and glutamate genes. G ...
DOI:
10.1111/j.1574-6968.2007.00932.x
PubMed:
17956427

4. Expression analysis of the colibactin gene cluster coding for a novel polyketide in Escherichia coli

Author:
Homburg, Stefan; Oswald, Eric; Hacker, Jörg; Dobrindt, Ulrich
Source:
FEMS microbiology letters 2007 v.275 no.2 pp. 255-262
ISSN:
0378-1097
Subject:
Escherichia coli; RNA-directed DNA polymerase; bacteria; carbon; coculture; cytopathogenicity; gene expression; luciferase; multigene family; operon; reporter genes; reverse transcriptase polymerase chain reaction; transcription (genetics)
Abstract:
... The recently described hybrid nonribosomal peptide-polyketide colibactin, found in various Escherichia coli strains, invokes a cytopathic effect in HeLa cells upon cocultivation with these bacteria. However, not much is known so far about the transcriptional organization of the colibactin genes (clb) or the regulation of their transcription. Here, the operon structure of the colibactin gene cluste ...
DOI:
10.1111/j.1574-6968.2007.00889.x
PubMed:
17714479

5. Up-regulation of yggG promotes the survival of Escherichia coli cells containing Era-1 mutant protein

Author:
Huang, Yong; Zhang, Bin; Dong, Ke; Zhang, XiaoNan; Hou, LiChao; Wang, Tao; Chen, NanChun; Chen, SuMin
Source:
FEMS microbiology letters 2007 v.275 no.1 pp. 8-15
ISSN:
0378-1097
Subject:
DNA; Escherichia coli; amino acid sequences; bacteriophages; gene expression; gene expression regulation; genes; guanosinetriphosphatase; heat; heat shock proteins; messenger RNA; metalloproteinases; microbial growth; mutants; stress response
Abstract:
... Era is a highly conserved GTPase essential for bacterial growth. Using a digoxigenin-labeled Era protein to screen a phage expression library of Escherichia coli genomic DNA, yggG, a gene that encodes a putative zinc metalloprotease was isolated and characterized. The deduced amino acid sequence of YggG showed high degrees of similarity to some reported heat shock proteins. In this study, the dire ...
DOI:
10.1111/j.1574-6968.2007.00860.x
PubMed:
17651431

6. Expression of Mycobacterium tuberculosis Rv1991c using an arabinose-inducible promoter demonstrates its role as a toxin

Author:
Carroll, Paul; Brown, Amanda C.; Hartridge, Anna R.; Parish, Tanya
Source:
FEMS microbiology letters 2007 v.274 no.1 pp. 73-82
ISSN:
0378-1097
Subject:
Escherichia coli; Mycobacterium smegmatis; Mycobacterium tuberculosis; antitoxins; arabinose; bacterial toxins; cell viability; gene expression; glucose; growth retardation; promoter regions; reporter genes; toxicity
Abstract:
... Conditional gene expression systems are useful tools for studying the role of essential or toxic gene products in bacterial systems. There is a paucity of such systems available for use in the mycobacteria. The utility of the Escherichia coli arabinose-inducible system was looked into, since it is tightly controlled in response to the presence of arabinose and glucose. It was demonstrated that the ...
DOI:
10.1111/j.1574-6968.2007.00842.x

7. Cloning and functional expression of the mitochondrial alternative oxidase of Aspergillus fumigatus and its induction by oxidative stress

Author:
Magnani, T.; Soriani, F.M.; Martins, V.P.; Nascimento, A.M.; Tudella, V.G.; Curti, C.; Uyemura, S.A.
Source:
FEMS microbiology letters 2007 v.271 no.2 pp. 230-238
ISSN:
0378-1097
Subject:
Aspergillus fumigatus; Escherichia coli; Saccharomyces cerevisiae; electron transport chain; gene expression; genes; heterologous gene expression; menadione; messenger RNA; open reading frames; oxidative stress; oxygen; oxygen consumption; paraquat; potassium cyanide; reactive oxygen species
Abstract:
... Aspergillus fumigatus possesses a branched mitochondrial electron transport chain, with both cyanide-sensitive and -insensitive oxygen-consumption activities. Mitochondrial reactive oxygen species mediate signaling for alternative oxidase (AOX) expression. A 1173 bp-long Afaox gene encoding a 40 kDa protein has been cloned and identified. Recombinant constructs containing the Afaox ORF were transf ...
DOI:
10.1111/j.1574-6968.2007.00716.x
PubMed:
17425662

8. Transcription in Escherichia coli PHL628 biofilms

Author:
Junker, Lauren M.; Toba, F. Andreas; Hay, Anthony G.
Source:
FEMS microbiology letters 2007 v.268 no.2 pp. 237-243
ISSN:
0378-1097
Subject:
Escherichia coli; biofilm; carbon; gene expression; gene induction; genes; mutants; nutrients; transcription (genetics)
Abstract:
... The biofilm-specific gene expression of Escherichia coli PHL628 was compared with that from exponentially growing planktonic cells using macroarray technology. In duplicate experiments, both biofilm and planktonic cells were grown in separate continually stirred tank reactors at 57% of the maximal planktonic growth rate. When transcriptional results from planktonic cultures were compared with that ...
DOI:
10.1111/j.1574-6968.2006.00585.x
PubMed:
17227468

9. The role of the omega subunit of RNA polymerase in expression of the relA gene in Escherichia coli

Author:
Chatterji, Dipankar; Ogawa, Yoshito; Shimada, Tomohiro; Ishihama, Akira
Source:
FEMS microbiology letters 2007 v.267 no.1 pp. 51-55
ISSN:
0378-1097
Subject:
messenger RNA; starvation; stress response; DNA microarrays; gene expression; ribosomal proteins; operon; DNA-directed RNA polymerase; Escherichia coli
Abstract:
... The rpoZ gene for the omega subunit of Escherichia coli RNA polymerase constitutes single operon with the spoT gene, which is responsible for the maintenance of stringent response under nutrient starvation conditions. To identify the physiological role of the omega subunit, we compared the gene expression profile of wild-type Escherichia coli with that of an rpoZ deleted strain by microarray analy ...
DOI:
10.1111/j.1574-6968.2006.00532.x